In Deutsch's view, to say that a social system is in equilibrium implies that: 1) it will return to a particular state when disturbed; 2) the disturb… - Walter F. Buckley

We argue, then, that the sociocultural system is fundamentally of the latter type, and requires for analysis a theoretical model or perspective built on the kinds of characteristics mentioned. In what follows we draw on many of the concepts and principles presented throughout this sourcebook to sketch out aspects of a complex adaptive system model or analytical framework for the sociocultural system.

The more recent concern with complex adaptive organization has led to the notion of contingency as the important key. Thus Wiener, while working in the field of communications and probability theory, became convinced 'that a significant idea of organization cannot be obtained in a world in which everything is necessary and nothing is contingent'

Adaptive system — whether on the biological, psychological, or sociocultural level — must manifest (1) some degree of "plasticity" and "irritability" vis-a-vis its environment such that it carries on a constant interchange with acting on and reacting to it; (2) some source or mechanism for variety, to act as a potential pool of adaptive variability to meet the problem of mapping new or more detailed variety and constraints in a changeable environment; (3) a set of selective criteria or mechanisms against which the "variety pool" may be sifted into those variations in the organization or system that more closely map the environment and those that do not; and (4) an arrangement for preserving and/or propagating these "successful" mappings.